Daewoo DTC-14D9 series Service Manual
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Daewoo DTC-14D9 series Service Manual

Daewoo DTC-14D9 series Service Manual

Color television
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Service Manual

COLOR TELEVISION
CHASSIS : CM-907S
Model : DTC-14D9/20D9/21D9 ME/MP/MT/MZ
DTC-14D2/21D2 ME/MP/MT/MZ
DTC-1420/2120 ME/MP/MT/MZ
DTC-21U8/2131/2132 ME/MP/MT/MZ
MODEL OPTION LIST
MODEL
ME
MP
MT
MZ
 Caution
: In this Manual, some parts can be changed for improving, their
performance without notice in the parts list. So, if you need the
latest parts information,please refer to PPL(Parts Price List) in
Service Information Center (http://svc.dwe.co.kr).
DAEWOO ELECTRONICS Crop.
http : //svc.dwe.co.kr
S/M No. : TCM907SEF0
TEXT
PIP
O
O
X
O
O
X
X
X
Dec. 2002

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Summary of Contents for Daewoo DTC-14D9 series

  • Page 1: Service Manual

    : In this Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information,please refer to PPL(Parts Price List) in Service Information Center (http://svc.dwe.co.kr). DAEWOO ELECTRONICS Crop. http : //svc.dwe.co.kr Dec. 2002...

  • Page 2: Table Of Contents

    ABLE OF CONTENTS ABLE OF CONTENTS 1. SPECIFICATIONS 2. SAFETY INSTRUCTION 3. CIRCUIT BLOCK DIAGRAM 4. ALIGNMENT INSTRUCTIONS 5. CM-907S TYPICAL SERVICE DATA 6. ELECTRICAL PARTS LIST 7. EACH MODEL PARTS LIST 8. SCHEMATIC DIAGRAM 9. PRINTED CIRCUIT BOARD 10. MECHANICAL EXPLODED VIEW AND PARTS LIST APPENDIX (“Appendix is provided only by internet [http://svc.dwe.co.kr]”) APPENDIX (“Appendix is provided only by internet [http://svc.dwe.co.kr]”) 11.

  • Page 3: Specifications

    1. SPECIFICATIONS Items Model DTC-14D9/20D9/21D9 ME/MP/MT/MZ DTC-14D2/21D2 ME/MP/MT/MZ DTC-1420/2120 ME/MP/MT/MZ DTC-21U8/2131/2132 ME/MP/MT/MZ TV Standard Color system PAL/SECAM, NTSC-4.43(AV) Sound system B/G, D/K, I Rated Voltage AC 100~250V, 50/60Hz Power consumption 14”=80W, 20”=90W, 21”=95W, 21”(Flat)=95W Sound Output Power 5W+5W(14”,20”), 7W+7W(21”,21”flat) VHF-L : IC1-S6CH (43.25MHz~140.25MHz) Channel Coverage VHF-H : IC1-S36CH (147.25MHz~423.25MHz) UHF : S37-C57CH(431.25MHz~863.25MHz)

  • Page 4: Safety Instruction

    2. SAFETY INSTRUCTION NOTE BEFORE SERVICING THIS CHASSIS READ THE “X-RAY RADIATION PRECAUTIONS”, “SAFETY PRECAUTIONS” AND “PRODUCT SAFETY NOTICE” BELOW. X-RAY RADIATION PRECAUTIONS 1. Excessive high voltage can produce potentially hazard- of the high voltage recorded as a part of the service ous X-RAY RADIATION.

  • Page 5: Circuit Block Diagram

    3. CIRCUIT BLOCK DIAGRAM...

  • Page 6: Alignment Instructions

    4. ALIGNMENT INSTRUCTIONS 1. SERVICE REMOCON & EEPROM PRESETTING DATA 1-1. SERVICE REMOCON : R-34SVC (S/N:48B3034SVC) 1-2. EEPROM PRESETTING DATA Name Details DEFAULT 14 /20 21 /21FLAT remark Heat-Run Screen Sound Test Picture Test BCL THD/GAIN 130/12 110/12-130/12 145/12-145/12 V-CENTER 3700 V-SIZE Geometry...
  • Page 7 ALIGNMENT INSTRUCTIONS SVC KEY EXPLAIN (S5) BCL THD : MAX BEAM CURRENT ADJUST,DIFFERENT DATA FOR INCH. BCL GAIN : AVERAGE BEAM ADJUST. (S6) GEOMETRY : PAL (50Hz) adjust. AV NTSC is auto correction. ---> H-CENTER(-1),V-SIZE(0),V-CENTER(+600),V-LINEARITY(-6) S-CORRECTION(0),H-PALLEL(0) (S10) NORMAL : PICTURE NORMAL data setting. (SLEEP) : TXT CHECK ON LINE (SIZE) : GAME FUNCTION CHECK ON LINE (S11) OPTION...
  • Page 8 ALIGNMENT INSTRUCTIONS 3.The adjustment of SCREEN 3-1. Confirm the presetting IBRM data of EEPROM according to CRT. 3-2. Press the [S2] KEY of SVC Remocon, horizontal line will be displayed. 3-3. Adjust SCREEN V/R of FBT so that the horizontal line reach the cut-off point. 3-4 To be completed adjustment of screen.
  • Page 9 ALIGNMENT INSTRUCTIONS 6-3. The adjustment of VERTICAL SIZE 6-3-1. Receive PAL RETMA pattern(signal of company:PAL-B 2CH). 6-3-2. Press the PR up/down Keys to select V-SIZE. Adjust with Vol Up/Down ( / ) keys so that the upper and the lower of RETMA pattern may be located at the boundaries of the screen.
  • Page 10 ALIGNMENT INSTRUCTIONS 7. THE ADJUSTMENT OF SUB-PICTURE (SUB-BRIGHT,SUB-CONTRAST) 7-1. Receive PAL RETMA PATTERN(signal of company:2CH., PAL-B) 7-2. Press the [S9] KEY of SVC Remocon, BRM OSD wil be displayed. 7-3. The adjustment of SUB-BRIGHT 7-3-1. Press the PR up/down Keys ( / ) to select SUB-BRIGHT in SUB-PICTURE MENU. Adjust SUB-BRIGHT with Vol Up/Down ( / ) keys.
  • Page 11 ALIGNMENT INSTRUCTIONS 9. REMOCON 9-1. SERVICE REMOCON 9-2. USER REMOCON POWER RECALL MUTE ADD/ERASE SURROUND MENU POSITION PAUSE/ TV/VIDEO STILL SIZE SLEEP POSITION R-34SVC 9-3. SERVICE REMOCON 1) Enter SERVICE MODE : Press keys of User Remocon, as follows. Ch91, Sharpness 0, Skip(red), Move(green), Menu. 2) Choice SERVICE MENU : Pr-Up/Down 3) Enter SERVICE SUB MENU : Vol-Up/Down -10-...

  • Page 12: Cm-907S Typical Service Data

    5. CM-907S TYPICAL SERVICE DATA -11-...
  • Page 13 CM-907S TYPICAL SERVICE DATA Name Details remark 14” 20” 21” 21” F BCL THD/GAIN 85 /12 130/12 140/12 145/12 WHITE PEAK : ON WHITE PEAK Geometry H-CENTER V-CENTER 3910 3850 3790 3520 V-SIZE H-SIZE 1520 1520 NOT USE PARA -122 -122 -122 -122...

  • Page 14: Electrical Parts List

    6. ELECTRICAL PARTS LIST Caution: In this Service Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr) DTC-21D9ME PART CODE PART NAME DESCRIPTION...
  • Page 15 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK C424 CEXF1V471V C ELECTRO 35V RSS 470MF (10X20) TP R410 RS01Z229J- R M-OXIDE FILM 1W 2.2 OHM J (TAPPING) C541 CEXF1C471V C ELECTRO 16V RSS 470MF (8X12)TP R413 RS01Z100J- R M-OXIDE FILM...
  • Page 16 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK C584 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) TP Q584 TKTC3198Y- KTC3198Y C585 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) TP Q585 TKTC3197— KTC3197 (TP) C606 CEXF1E470V C ELECTRO...
  • Page 17 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK C635 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z J008 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING C832 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z J009 85801065GY WIRE COPPER...
  • Page 18 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK J070 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J132 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J071 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING L101 5CPZ100K02 COIL PEAKING 10UH K (AXIAL 3.5MM)
  • Page 19 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK R518 RD-AZ181J- R CARBON FILM 1/6 180 OHM J R604 RD-AZ101J- R CARBON FILM 1/6 100 OHM J R519 RD-AZ181J- R CARBON FILM 1/6 180 OHM J R605 RD-AZ222J- R CARBON FILM...
  • Page 20 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK ZZ200 PTPMJ2D691 PCB PIP CHIP B AS DTC-21D9ME CP19 CCZF1H103Z C CERA 50V F 0.01MF Z IP01 1SDA9488XE IC CHIP PIP SDA9488X CP24 CCZB1H820K C CERA 50V B 82PF K (AXIAL) ZZ200 PTPMJRD691...

  • Page 21: Each Model Parts List

    7. EACH MODEL PARTS LIST -20-...

  • Page 22: Schematic Diagram

    8. Schmetic Diagram -21-...

  • Page 23: Printed Circuit Board

    9. Printed Circuit Board -22-...

  • Page 24: Mechanical Exploded View And Parts List

    ABS GY MATERIAL REMARKS PART CODE PART NAME Q’ty Designed by Checked by Inspected by Approved by PART NAME UNITS K.G.S DEVELOPMENT DWG SCALE 02/02/18 Daewoo Electronics CO.,LTD. MODEL DTD-14D 9MZ 485009 KC Team 4, TV Research Center REFERENCE CM-90 -23-...
  • Page 25 PART CODE PART NAME Q’ty Designed by Checked by Inspected by Approved by PART NAME UNITS GJ YANG DEVELOPMENT DWG SCALE MODEL DTD-20D9 DAEWOO Electronics CO.,LTD. 485009KE Mechani c al Desi g n Team, TV Research Center REFERENCE CM-90 7S -24-...
  • Page 26 BUTTON POWER ABS GY MATERIAL REMARKS PART CODE PART NAME Q’ty Designed by Checked by Inspected by Approved by PART NAME UNITS y.k.park DEVELOPMENT DWG SCALE MODEL DTD-21D9 DAEWOO Electronics Corp. 485009LA Mechanical Design Team, TV Research Center REFERENCE CM-907S -25-...
  • Page 27 HIPS GY PART CODE PART NAME MATERIAL REMARKS Q’ty Designed by Checked by Inspected by Approved by ASSY NAME UNITS Y.W.KANG S.D.PARK DEVELOPMENT DWG(1/1) SCALE MODEL DTC/DTD-2131 DAEWOO Electronics Corp. 485009JY Mechanical Design Team, TV Research Center REFERENCE CM-907S -26-...

  • Page 28: Ic Description

    11. IC DESCRIPTION VCT 38xxA/B 1. Introduction The VCT 38xxA/B family offers a rich feature set, cov- The VCT 38xxA/B is an IC family of high-quality single- ering the whole range of state-of-the-art 50/60-Hz TV chip TV processors. Modular design and a submicron applications.
  • Page 29 IC DESCRIPTION VCT 38xxA/B VCT 38xxA/B 3. Pin Configuration VSUPP1 GNDP1 RESQ XTAL2 XTAL1 GNDS VIN5/P10 VSUPS VOUT AOUT1 AOUT2 SGND AIN1 GNDAF AIN2 VUSPAF AIN3 CBIN XREF CIN1 CIN2/CRIN VIN1 GNDAB VIN2 VSUPAB BOUT VIN3 GOUT VIN4 ROUT TEST SVMOUT HOUT RSW2...
  • Page 30 IC DESCRIPTION VCT 38xxA/B 4. Pin Connections and Short descriptions NC=not connected IN=Input LV=if not used, leave vacant OUT=Output X=obligatory;connect as described in circuit diagram SUPPLY=Supply Pin Pin No. PSDIP Pin Name Type Connection Short Description 64-pin (if not used) IN/OUT Port 1, Bit 7 IN/OUT...
  • Page 31 IC DESCRIPTION VCT 38xxA/B Pin No. PSDIP Pin Name Type Connection Short Description 64-pin (if not used) VERT Differential Vertical Sawtooth Output Vertical Parabola Output SENSE Sense ADC Input GNDM SUPPLY Ground, MADC Input RSW1 Range Switch1 for Measurement ADC RSW2 Range Switch2 for Measurement ADC SVMOUT...
  • Page 32 IC DESCRIPTION VCT 38xxA/B 5. Pin Descriptions for PSDIP64 package Pin 23, TEST Test Input (Fig. 6–5) This pin enables factory test modes. For normal opera- tion, it must be connected to ground. Pin 1,2,5-10, P17 P10 I/O Port (Fig. 6–27) These pins provide CPU controlled I/O ports.
  • Page 33 IC DESCRIPTION VCT 38xxA/B Pin 35, VERT Vertical Sawtooth Output (Fig. 6–20) Pin 48, XREF DAC Current Reference (Fig. 6–24) This pin supplies the drive signal for the vertical output External reference resistor for DAC output currents, stage. The drive signal is generated with 15-bit preci- typical 10 k ߟ...
  • Page 34 IC DESCRIPTION VCT 38xxA/B 6. Pin Circuits VSUP VSUP To ADC Fig. 6-5 : Input pins TEST, DISINTROM Fig. 6-9 : Input pins VIN1-VIN5 VSUP VSUP To ADC Fig. 6-10 : Input pins CIN1-CIN2 Fig. 6-6 : Input/Output pins RESQ, SDA, SCL VSUP VSUP To ADC...
  • Page 35 IC DESCRIPTION VCT 38xxA/B VSUP VSUP Clamping Fig. 6-14 : Input pins RIN, GIN, BIN Fig. 6-19 : Output pin INTLC VSUP Flyback Bias VERTQ Fig. 6-15 : Output pin ROUT, GOUT, VERT BOUT, SVMOUT Fig. 6-20 : Output pins VERT, VERTQ Fig.
  • Page 36 IC DESCRIPTION VCT 38xxA/B VSUP VSUP s Fig. 6-23 : Input pins SENSE Fig. 6-28 : Input pins P42-P46 VSUP ref. current int. ref. XREF voltage VSUP Fig. 6-24 : Supply pins XREF, VRD 40 k 2.5V Fig. 6-29 : Outpin pins ADB0-ADB18, OE1, OE2, WE1, WE2 Fig.
  • Page 37 IC DESCRIPTION TDA8946J 1. Block Diagram V CC1 V CC2 OUT1- IN1- IN1+ OUT1+ TDA8946J OUT2- IN2- IN2+ OUT2+ V CC STANDBY/ MODE MUTE LOGIC SHORT CIRCUIT TEMPERATURE PROTECTION MBK929 GND1 GND2 -36-...
  • Page 38 IC DESCRIPTION TDA8946J 2. Block Diagram 2-1 Pinning OUT1- GND1 V CC1 OUT1+ n.c. IN1+ n.c. IN1- TDA8949J IN2- MODE IN2+ OUT2+ GND2 V CC2 OUT2- MBK932 2-2 Pin description Symbol Description OUT1- negative loudspeaker terminal 1 GND1 ground channel 1 supply voltage channel 1 OUT1+ positive loudspeaker terminal 1...
  • Page 39 IC DESCRIPTION TDA7442D 4STEREOINPUTS INPUTATTENUATIONCONTROLIN0.5dB STEP TREBLEANDBASSCONTROL TWOSURROUNDMODEAVAILABLEWITH 4SELECTABLERESPONSES: - MUSIC - SIMULATEDSTEREO TWOSPEAKERATTENUATORS: - 2INDEPENDENTSPEAKERCONTROLS IN1dBSTEPSFORBALANCEFACILITY - INDEPENDENTMUTEFUNCTION SDIP32 ALLFUNCTIONSPROGRAMMABLEVIASE-RIALBUS 2MONITOROUTPUT(ONLYFORTDA7442) R-IN2 R-IN3 R-IN1 R-IN4 MONITOR(L) L-OUT MONITOR(R) R-OUT L-IN1 AGND L-IN2 L-IN3 CREF L-IN4 MUXOUT(L) IN(L) DIGGND MUXOUT(R) TREBLE-R N.C.
  • Page 40 IC DESCRIPTION TDA7442D BLOCK DIAGRAM(TDA7442D) -39-...
  • Page 41 IC DESCRIPTION TDA7442D TDA7442 - TDA7442D PIN: TREBLE-L, TREBLE-R PIN: VOUT REF 20µA 20µA D95AU233A D95AU309 PIN: L-IN, R-IN, L-IN2, R-IN2, L-IN3, R-IN3, PIN: CREF L-IN4, R-IN4, 20µA 20µA D95AU336 D94AU200 PIN: SCL, SDA PIN: LP 20µA 20µA D94AU205 D95AU308 -40-...
  • Page 42 IC DESCRIPTION TDA7442D PIN: BASS-LI,BASS-RI PIN: L-OUT, R-OUT 20µA 20µA : Bass BASS-LO BASS-RO D98AU949 D95AU230 PIN: BASS-LO,BASS-RO 20µA BASS-LI,BASS-RI D98AU950 -41-...
  • Page 43 IC DESCRIPTION TEA5101B BANDWIDTH : 10MHz TYPICAL RISE AND FALL TIME : 50ns TYPICAL CRT CATHODES CURRENT OUTPUTS FOR PARALLEL OR SEQUENTIAL CUT-OFF OR DRIVE ADJUSTMENT FLASHOVER PROTECTION POWER DISSIPATION : 3.5W ESD PROTECTED BLUE FEEDBACK BLUE CATHODE CURRENT BLUE OUTPUT GREEN FEEDBACK GREEN CATHODE CURRENT GREEN OUTPUT...
  • Page 44 PIN FUNCTION Function Description Blue Input Input of the “blue” amplifier. It is a virtual ground with 3.8V bias voltage, 15 microamperss input bias current with 14KΩ input resistance. Low voltage power supply, typically 12V. Green Input See Pin 1. Red Input See Pin 1.

  • Page 45: Trouble Shooting Charts

    12. TROUBLE SHOOTING CHARTS 1. NO RASTER CHECK MAIN B+(123V) NORMAL ABNORMAL CHECK VOLTAGE CHECK HEATER VOLTAGE OF C804(180UF) VIDEO B+(180V) LINE 295VDC AT AC 220V 27V & 13.5V NORMAL NORMAL ABNORMAL ABNORMAL CHECK/ REPLACE CHECK/REPLACE CHECK Horizontal F801 I801 plose AT PIN 24 OF I501 (STR-F6656) NORMAL...
  • Page 46 TROUBLE SHOOTING CHARTS 2. NO PICTURE(RASTER OK) CHECK SIGNAL AT PIN 19 OF I501 NORMAL ABNORMAL CHECK SIGNAL AT PIN CHANGE INPUT MODE 42, 43, 44, OF I501 RF --> AV --> RF NORMAL ABNORMAL CHECK VOLTAGE AT PIN CHANGE SIGNAL 45 OF I501 CVBS OF TUNER ABNORMAL...
  • Page 47 TROUBLE SHOOTING CHARTS 3. NO COLOR ABNORMAL CHECK SIGNAL AT REFER TO 19TH PIN OF I501 NO PICTURE NORMAL CHANGE THE SYSTEM CHECK / REPLACE PAL ---> SECAM CVBS OF TUNER CHECK R,G,B SIGNAL 42,43,44TH OF I501 CHECK / REPLACE Q502,Q503,Q504,Q505 CHECK CRT BLOCK...
  • Page 48 TROUBLE SHOOTING CHARTS 4. NO PICTURE CHECK NORMAL CHECK SIGNAL AT R,G,B 19TH PIN OF I501 OF I501 ABNORMAL CHANGE INPUT MODE CHECK / REPLACE RF ->AV ->RF Q502,Q503,Q504,Q505 CHECK SIGNAL AT CHECK / REPLACE CVBS OF TUNER SCL, SDA, B+ OF TUNER CHECK CHECK SIGNAL AT...
  • Page 49 TROUBLE SHOOTING CHARTS 5. NO VERTICAL SCANNING(ONE HORIZONTAL LINE RASTER) CHECK DY CONNECTOR CHECK / REPLACE ABNORMAL D410, D301 CHECK INPUT 27V LINE, 13V LINE VOLTAGE OF I301 NORMAL ABNORMAL CHECK CHECK VERTICAL INPUT 35TH PIN OF I501 (Vin) OF I301 ABNORMAL CHECK / REPLACE CHECK / REPLACE...
  • Page 50 TROUBLE SHOOTING CHARTS 6. NO MIAN SOUND (PICTURE) CHECK VOLTAGE AT PIN OF I601 ABNORMAL NORMAL CHECK SIGNAL AT PIN CHECK / REPLACE 1,2,14,17 OF I601 D814 NORMAL ABNORMAL CHECK SIGNAL AT PIN CHECK / REPLACE 6,12 OF I601 P602A, P602B NORMAL ABNORMAL CHECK SIGNAL AT PIN...
  • Page 51 TROUBLE SHOOTING CHARTS 7. NO EXTERNAL AV(RF OK) CHECK CONNECTION of AV1, AV2, DVD1, DVD2 ABNORMAL CHECK SIGNAL AT PIN CHECK / REPLACE 20, 21, 22, 16, 17, 18 OF I501 Q583, Q584, Q585, Q586 NORMAL CHECK SIGNAL AT PIN R,G,B,42,43,44 OF I501 -50-...
  • Page 52 TROUBLE SHOOTING CHARTS 8.REMOTE CONTROL UNIT TROUBLE CHECK ABNORMAL REPLACE BATTERY AND LED BATTERY OF REMOCON NORMAL ABNORMAL CHECK IR OF PREAMP AND REPLACE PREAMP IC(IF01) VCC OF PREAMP IC(IF01) NORMAL CHECK/REPLACE 8TH PIN OF I501 -51-...

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